gcp
Going nomadic.
- Joined
- Sep 1, 2021
- Messages
- 49
Hello! I am outfitting a tiny camper with solar panels, a 170 Ah 12v lithium battery, and a 2000w inverter charger so I can live/work off the grid for a while. Due to space constraints and the presence of other equipment on the roof, I'm attempting to maximize power generation by using a parallel system of mismatched panels from Newpowa. The panels are all the same Voltage (16.77), but different Amps. My MPPT charge controller isn't going to work with this system, so I'm looking for recommendations for a PWM charge controller to use with this system. Thank you!
Some more details:
I have four solar panels from Newpowa (specs sheets also attached):
(2x) 210w Mono Panels
– 16.77 Vmp
– 12.48 Imp
– 19.83 Voc
(2x) 160w Mono Panels
– 16.77 Vmp
– 9.3 Imp
– 19.83 Voc
If my parallel system calculations are correct, under ideal circumstances this system will produce:
16.77 Volts
43.56 Amps
I was intending to use a Renogy Rover 60v 150v MPPT Charge Controller and a 170Ah 12v Lithium battery and some big fat wires between the roof and controller. I just realized however, that this parallel setup won't create enough voltage to activate the MPPT charge controller in less than ideal sunlight conditions, as MPPT needs the panels to produce a few volts more than the battery's voltage in order to activate.
So, here I am asking for PWM charge controller recommendations for this setup. (Or, for someone to tell me that I'm better off cutting my losses, trying to return to sell these items, and get a matched system that generates less power, but is a bit simpler overall.)
Thank you very much!
Some more details:
I have four solar panels from Newpowa (specs sheets also attached):
(2x) 210w Mono Panels
– 16.77 Vmp
– 12.48 Imp
– 19.83 Voc
(2x) 160w Mono Panels
– 16.77 Vmp
– 9.3 Imp
– 19.83 Voc
If my parallel system calculations are correct, under ideal circumstances this system will produce:
16.77 Volts
43.56 Amps
I was intending to use a Renogy Rover 60v 150v MPPT Charge Controller and a 170Ah 12v Lithium battery and some big fat wires between the roof and controller. I just realized however, that this parallel setup won't create enough voltage to activate the MPPT charge controller in less than ideal sunlight conditions, as MPPT needs the panels to produce a few volts more than the battery's voltage in order to activate.
So, here I am asking for PWM charge controller recommendations for this setup. (Or, for someone to tell me that I'm better off cutting my losses, trying to return to sell these items, and get a matched system that generates less power, but is a bit simpler overall.)
Thank you very much!